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CBSE Class 12-science Answered

1.Define modulation index. 2.What is the preferable value of modulation index in AM system, high value or moderate value?
Asked by Topperlearning User | 09 Jul, 2014, 09:42: AM
answered-by-expert Expert Answer

1. Modulation index(μ) of an AM wave is the ratio of amplitude of modulating signal(A m ) and amplitude of carrier wave(A C).

 



       


2. Modulation index is kept less than 1, that is Am<Ac.

A moderate value of modulation index is desirable so as to avoid distortion in the wave form.  

Answered by | 09 Jul, 2014, 11:42: AM

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